How are opponents matched for weight, age and experience?

Under Boxing Canada's Articles and Rules (January 2025):

• Weight (U13, U15, U17): maximum difference 3 kg if under 54 kg; 4 kg if over 54 kg and under 66 kg; 5 kg if over 66 kg and under 80 kg; no maximum if both are over 80 kg. Funbox: 3 kg.
• Weight (U19): boys and men under 90 kg, 5 kg; girls and women under 60 kg, 3 kg; between 60 kg and 80 kg, 5 kg; no maximum if both girls and women are over 80 kg or both boys and men are over 90 kg.
• Age (U13, U15, U17): a boxer may not be more than 24 months younger than the opponent. Funbox: maximum 12 months apart.
• Experience: Novice v Novice, maximum 7 bouts apart; Novice v Open, maximum 5 bouts apart. Open v Open has no limit. When a Novice boxes an Open boxer, the number and length of rounds are those of the Novice.
• Competing up: U13 boxers cannot compete in U15, U15 cannot compete in U17, and U17 cannot compete in U19.